Updated: Wednesday, May 8, 2013
| Date | Transaction/Injury Type | |
| Wed. May 8, 2013 | SIGNED BLAKE SPEERS (1st Rd, 2013) and COLTON WHITE (2nd Rd, 2013) to OHL Standard Player Agreements | |
| Mon. Apr. 29, 2013 |
SIGNED MEDRIC MERCIER (7th Rd, 2012) to a Standard Player Agreement | |
| Fri. Mar 22, 2013 |
RECALLED C DAVID MILLER (Georgetown Jr. A) | |
| Sun. Mar 17, 2013 |
RECALLED F NICK PASTORIOUS from the Soo Thunderbirds Jr. A and D KYLE JENKINS from the Oakville Blades. Both subsequently re-assigned following game vs London | |
| Tues. Jan 8, 2013 |
TRADE F MARK PETACCIO to Ottawa 67's in exchange for 9th Round Selection in 2013 OHL Priority Selection | |
| Sun. Jan 6, 2013 |
Re-Assigned C DAVID MILLER to Georgetown Jr. A | |
| Wed. Dec 27, 2012 |
Recalled C DAVID MILLER from the Georgetown Raiders (OJHL) | |
| Thurs. Dec 13, 2012 |
Recalled C TYLER GAUDET from the Pembroke Lumber Kings (CCHL) | |
| Thurs. Nov 22, 2012 |
D TYLER GANLY suspended by the OHL for 2 games. Eligible to return November 28 vs Sudbury | |
| Mon. Nov 19, 2012 |
D MATT FULLER placed on waivers by the club. | |
| Wed. Nov 7, 2012 |
D CHRIS BUONOMO suspended by the OHL for 15 games. Eligible to return to the line-up Wed. Dec 12 vs Plymouth | |
| Tues. Oct 30, 2012 |
D COLIN MILLER and F MARK PETACCIO suspended by OHL 3 games each. Both eligible to return to line-up Sat. Nov 10 @ Owen Sound | |
| Fri. Oct 26, 2012 |
F LANDON SCHILLER suspended 10 games by OHL. Eligible to return to line-up Nov. 23 @ Sudbury | |
| Sun. Oct 14, 2012 |
D KEVIN SPINOZZI suspended 8 games by OHL. Eligible to return to line-up Nov. 9 @ Kitchener | |
| Sun. Oct 7, 2012 |
INJURY - Defenceman RYAN SPROUL out for 8-12 weeks with a fractured arm. Injury sustaned Sat. Oct 6 vs Sarnia | |
| Mon. Oct 1, 2012 |
ACQUIRE OA defenceman CHRIS BUONOMO from the Barrie Colts in exchange for a 4th Round selection in 2014 OHL Priority Selection | |
| Sun. Sept. 30, 2012 |
INJURY - OA defenseman COLIN MILLER. Length out of line-up expected to be 3-4 weeks. | |
| Sat. Sept 29, 2012 |
INJURY - F NICK HALAGIAN injured (upper body) last night in game @ Sarnia. Length out of line undetermined. | |
| Tues. Sept 25, 2012 |
F David Quesnele joins the Kingston Voyageurs (OPJHL). | |
| Tues. Sept. 18, 2012 |
RE-ASSIGN D Fraser Turner (Soo Thunderbirds), F Dylan Mascarin (Thunder Bay North Stars) and G Charlie Millen (Ottawa Jr. Senators) to reduce roster to 25 active players | |
| Tues. Sept 11, 2012 |
RELEASE veterans Cody Mintz, Greg Jambrosich and Alex Morgan to reduce roster to 28 active players | |
| Fri. Sept 7, 2012 |
ACQUIRE LC Jacob Smith from KGN in exchange for 14th Rd Selection in 2013 OHL Priority Selection | |
| Wed. Aug 1, 2012 |
ACQUIRE LW Mitchell Dempsey and F Dylan Mascarin from PLY in exchange for D Gianluca Curcuruto | |
| Mon. June 11, 2012 |
ACQUIRE D Alex Gudbranson from KGN in exchange for OSH's 2nd Rd Pick in 2013, SBY's 4th Rd Pick in 2014 and SSM's 9th Rd Pick in 2015 | |
| Tues. June 5, 2012 |
ACQUIRE PBO's 2nd Rd Pick in 2013 and PBO's 3rd Rd Pick in 2014 in exchange for OA Brett Flindlay | |
| Thurs. May 3, 2012 |
SIGNED C Jared McCann (1st Rd, 2012) and D Kevin Spinozzi (2nd Rd, 2012) to Standard Player Agreement | |
| Wed. Apr. 25, 2012 |
SIGNED G Justin Nichols (3rd Rd, 2011) to Standard Player Agreement | |